{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-92627", "assignerOrgId": "0253b833-3e77-4dfe-9d57-17db1a2f0a74", "state": "PUBLISHED", "assignerShortName": "HDFG", "dateReserved": "2026-09-16T15:14:38.985Z", "datePublished": "2026-09-16T15:16:54.160Z", "dateUpdated": "2026-09-16T15:58:14.633Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "0253b833-3e77-4dfe-9d57-17db1a2f0a74", "shortName": "HDFG", "dateUpdated": "2026-09-16T15:58:14.633Z"}, "title": "Heap Use-After-Free in H5T__conv_f_f", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-416", "description": "CWE-416 Use after free", "type": "CWE"}]}], "affected": [{"vendor": "The HDF Group", "product": "HDF5", "modules": ["src/H5Tconv.c"], "versions": [{"status": "affected", "version": "< 1.14.2"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A heap-use-after-free vulnerability exists in H5T__conv_f_f() in src/H5Tconv.c in HDF5 before 1.14.2.\u00a0When converting a compound datatype containing floating-point members during a dataset read, a temporary buffer allocated with calloc() is freed and subsequently read from within the same conversion routine. An attacker who can supply a crafted HDF5 file containing a specially constructed compound datatype can trigger the use-after-free when the file is parsed by an application that reads the affected dataset, such as h5dump.\u00a0This can result in a crash and, depending on heap layout and allocator behavior, may be exploitable for further memory corruption up to remote code execution.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>A heap-use-after-free vulnerability exists in <code>H5T__conv_f_f()</code> in <code>src/H5Tconv.c</code> in HDF5 before 1.14.2.&nbsp;<span>When converting a compound datatype containing floating-point members during a dataset read</span><span>, a temporary buffer allocated with </span><code>calloc()</code><span> is freed and subsequently read from within the same conversion routine. An attacker who can supply a crafted HDF5 </span><span>file containing a specially constructed compound datatype can trigger the use-after-free when the file is parsed by an application that reads the affected dataset, such as </span><code>h5dump</code><span>.&nbsp;</span><span>This can result in a crash and, depending on heap layout and allocator behavior, may be exploitable for further memory corruption up to remote code execution.</span></p>"}]}], "references": [{"url": "https://pulsesecurity.co.nz/advisories/hdf5-memory-corruption"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "LOW", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "MEDIUM", "baseScore": 4.6, "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N"}}], "credits": [{"lang": "en", "value": "Denis Andzakovic", "type": "reporter"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}}}

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